9.0L DOHC Big-Block From Mercury Racing

Tired of finding LS engines in everything and long for the days when a big-block was the ultimate underhood bragging right? Those days have returned. The Mercury Racing (MercuryRacing.com) division of Mercury Marine has unveiled a new all-aluminum, quad-cam, four-valve-per cylinder (QC4v) 9.0L big-block crate motor based on its twin-turbo marine engine.

Mercury Racing designed the QC4v engine architecture in 2010. It’s a 90-degree V8 with a deep-skirt block, cross-bolted main bearing caps, dual overhead cams (DOHC), four valves per cylinder, dry-sump oiling system, sequential-port fuel injection, and coil-on-plug ignition. When fit into a boat (with effectively unlimited cooling) these 552ci powerplants are offered in three trim levels: 1,100 hp, 1,350 hp, and 1,650 hp. Why should you care? These engines features a 90-degree Chevy V8 bellhousing, and Mercury Racing has already fit one into a mid-engine supercar.

All this power doesn’t come cheap, however, as the street version of the QC4v is estimated to cost $65,000